The utility model discloses a vehicle antenna including a bearing vehicle and an antenna, the antenna is arranged on a carrying vehicle through a foldable support, the foldable support includes a driven rod, a support rod, a base fixedly connected with the carrying vehicle, a driving rod sliding along the base, and a rotating shaft rotationally connected with the base, the lower end of the support rod is fixedly connected with the rotating shaft, the upper end of the support rod is connected with a connecting rod, the connecting rod is provided with a front surface of the support rod, the top end of the connecting rod is rotationally connected with a holder, one end of the driven rod is fixedly connected with the driving rod, the other end of the driven rod is hinged to the back side of the support , and a first hydraulic drive device for driving the driving rod to slide along the base is arranged on the base. During the transportation, the antenna can be folded through the first hydraulic device while being limited by height or small corners, so that the vehicle antenna can successively pass through, the operation smoothness of the vehicle antenna can be improved, repeated detachment can be prevented, and work efficiency is improved. The vehicle antenna is simple in structure, small in size, light in weight, and can be applied to local discharging signal detection.